Henby wabden



(No Model) H. WARDEN.

SEPARATING LIQUID FROM SOLID MATTER AND MECHANISM THEREFOR.

Thurman dramas Parent: Carr on,

HENRY WARDEN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE ATLANTIC REFINING COMPANY, OF SAME PLACE.

SEPARATING LIQUID FROM SOLID MATTER, AND MECHANISM THEREFOR.

SPECIFICATION forming part of Letters Patent No. 298,60, dated May 13, 1884.

Application filed May 24, 1883. (No model.)

To aZZ whom it may concern:

Be it known that I, HENRY WARDEN, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Separating Liquid from Solid Matters, and in Mechanism therefor, of which the following is a specification.

My invention relates, mainly, to a process of separating liquid from solid matteras, for instance, oil from the paraffine of petroleum my process consisting in compressing supply after supply of the liquid between filtering mediums, thereby lodging between them layer after layer of solid matter, one layer being incorporated with preceding layers until a com paratively thick cake of solid matter composed of the several successive layers is produced. The process enables me to obtain a solid matter more free from the liquid than by the usual process of filtration under pressure.

My invention further consists of certain mechanism, fully described hereinafter, by which the process may be carried into effect.

In the accompanying drawings, Figure l is a vertical section of my improved filteringpress; Fig. 2, a transverse section showing the grooved face of one of the plates; Fig; 3, a section, drawn to an enlarged scale, of two of the grooved plates, two filtering-bags, and appliances connected therewith; Fig. A, a sectional perspective view of one of the bags, and Fig. 5 a view showing the manner of applying the bags to the plates.

A and B are the two end plates of the press, the former being the fixed or abutment plate, and the latter the movable plate, to which pressure is applied by any mechanical appliances, preferably by an ordinary hydraulic press, of which (t represents a portion of the ram or plunger.

It has not been deemed necessary to illustrate the frame-work of the filter-press, as it may be varied in construction; but I have shown in Fig. 2 the two tension-bars b b, which form parts of the frame-work.

Between the two end plates,'A B, are a number of intermediate plates, D-five in the present instance-each of these plates, as well as 50 the end plate B, being provided with oppo site lugs, d (2, having notches adapted to the tension-bars I) Z), on which the said plates can be moved to and fro when relieved from pressure.

In the inner face of each of the end plates, A and B, and in both faces of each intermediate plate, D, is a series of concentric annular grooves, n, which communicate with each other through notches made in the ribs between the grooves at the points indicated in Fig. 2, the outermost groove, a, communicating through passages with an outlet, a", as best observed in Fig. The end plate A has a central opening, 0, communicating with apipe, f, for con veying the liquid to be operated on to the 111- ter-press, this pipe being furnished with a suitable valve or cook, f. Each of the interme diate plates, D, has also a central opening.

A thin perforated plat-e, w, is applied to the inner grooved face of each of the end plates, A B, and a similar perforated plate to eachgrooved face of each intermediate plate, D, each of the said perforated plates having a central opening, excepting it be that applied to the movable plate B.

Each filtering-bag H used in connection with the several plates is of the peculiar construction best observed in the perspective view, Fig. 4., and in the enlarged sectional view, Fig. 3, and consists of two disks, h h, of suitablefiltering fabric, the said disks being bent abruptly near the middleat z, and being united by an annular seam, m, so as to leave a central opening, q. The disk It is attached to a metal ring, I, and the disk It to a similar ring, I. There is an intermediate plate, D, and its two perforated plates between the disks h h of each of the above-described bags, the manner of applying the bag to the plate being shown in Fig. 5, where it will be observed that one of the disks detached from its ring is folded or twisted until it can pass through the central opening of the plate, after which it is untwisted, spread out, and attached to the ring.

'When the several parts are in place, as shown in Fig, 1, the disk h of one bag and the disk h of an adjoining bag are between two plates D D, the edges of the disks being between the ring I of one bag and the ring Iof 'roo the adjoining bag, one ring overlapping one plate D, and the other overlapping theadjoining plate. The two rings may be secured together, so as to confine the disks of the two bags,by bolts, clamps, or other appliances; but I prefer the plan which I will proceed to describe.

For each pair of adjoining rings I I there is a band, I made in two parts, and with lugs for receiving bolts, so that the band can be easily contracted. To the inner side of the band are secured blocks 19 at suitable intervals, each block being grooved on the inside, and the opposite sides of the groove being beveled, so as to correspond with the beveled edges of the rings I I, so that on contracting the two-part band the disks of filtering fabric will be firmly secured between the said rings. The plates D are free to slide in the rings, which present no obstacle to forcing the plates as close together as the two disks of filtering fabric and two perforated plates will permita special feature of my invention, the advantages of which will be rendered apparent hereinafter.

It should be stated here that to complete the system of filtering apparatus a disk, 16, of v filtering fabric is secured at and near the middle of the grooved face of the abutment-plate A, the disk being confined at and near its outer edge, with the disk h of the first filtering-bag between two metal rings, I I. In

order to secure this disk '6 of fabric to the abutment-plate A, I form a recess round the central opening of this plate, and confine the folded central portion of the fabric to the bottom of this recess by a metal ring, Y. Adisk, o, of filtering fabric, also adjoins the grooved face of the last or pressure plate, B, of the press, and is confined, with the disk 71. of the last bag of the press, between metal rings I I.

It will now be seen that a press having the two end plates, A and B, and five intermediate plates presents siX communicating chambers bounded by filtering fabric for the receptionof the liquid to be operated on.

' In operating the apparatus the intermediate plates, D, and end plate B are adjusted as far apart as possible without passing from the rings-I I, (see Fig. 3,) after which the valve f is opened until all the filtering-chambers are filled with the liquid, which we will sup pose to be in the present instance paraffineoil. After closing the valve, pressure is applied to the end plateB, thereby causing a general sliding of the plates in the rings I I, contracting the filtering-chambers, and cansing the oil to pass through the several filtering-disks of fabric and through the perforated and thence through the outlets as :0.

plates into the grooves of the several plates, The pressure is continued until each grooved plate of the press is as nearly in contact with an adjoining plate as is permitted by the thickness of the two perforated plates, two disks of filtering fabric, and a thin film or cake of parafiine interposed between these disks. In other words, every filtering-chamber-is contracted until it contains nothing but a thin solid cake of paraffine deprived of oil. After pressure is removed from the end plate B of the press and the chambers again expanded I by the adjustment of the plates to their former positions, a new supply of oil is introduced into the filtering-chambers and pressure again applied, so that another thin cake is added to and incorporated with the first, and these operations are continued and film after film of paraffine added to the mass in each chamber until a solid cake of that material composed of successive layers is contained within each filteringchamber, after which the two-part clampingrings are detached, thereby releasing the several sets of ringsII, which may be now moved apart for the introduction of suitable instruments for the removal of the paraffine. After all the paraffine has been removed, the rings I I are secured together with the filteringdisks between them, preparatory to a repetition of the above described operations.

The most prominent advantage of my invention is the facility afforded for forcing the plates of the press so nearly together as to practically close the filtering-chambers, and so thoroughly express the oil that nothing remains between the walls of the filtering-chamber but a solid mass of paraffine free from oil.

Good merchantable paraffine can be produced by the above-described apparatus at one operation, whereas two filtrations are necessary in operating an ordinary filtering-press.

There should be an outlet, j, for the oil forced through the disk 25 of the first filtering-bag into the grooves in the face of the abutmentplate A, and an outlet, j, for the oil forced through the disk '0 of the last filtering-bag into the grooves of the plate B.

I claim as my invention 1. The mode herein described of separating solid matter from oil and other liquids, the said mode consisting in compressing supply after supply of the liquid between filtering fabrics, and thereby lodging between the same layer after layer in succession of solid matter, one layer being incorporated with previous layers. until a comparatively thick cake composed of the several layers is produced, substantially as described.

2. \A filtering-press in which are combined the following elements, namely: first, rings I I; second, disks of filtering fabric; third, devices for confining the said disks between the rings,- and, fourth, grooved plates fitted to the IIO the other overlapping the other grooved plate, I In testimony whereofl have signed my name 7 and devices for securing the rings, all substanto this specification in thepresenoe of two sub- 10 tielly as described. scribing witnesses.

4. The combination of the grooved plates 7' T w 5 and the beveled rings I I, confining filtering- HENI E disks, 'With a eontractible band, P, carrying Witnesses: blocks 19, adapted to the said rings, substantially as specified.

HARRY L. ASHENFELTER, HARRY SMITH. 

